Ac Power Supply

Aluminium frame pattern for recycled multitap transformer
knoba - Ac Power Supply

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Transformer core shaping buck
knoba - Ac Power Supply

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Frame made
knoba - Ac Power Supply

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knoba - Ac Power Supply

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Donor psu…
knoba - Ac Power Supply

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Ac system internals in
knoba - Ac Power Supply

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240vac @ 50Hz in: 1, 3, 6, 9 & 12vac @ 50Hz out
knoba - Ac Power Supply

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Illuminated the meter.
knoba - Ac Power Supply

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New laminated fascia (cad file below)
knoba - Ac Power Supply

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New laminated meter scale (cad file below)
knoba - Ac Power Supply

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Schematics (Fritzing file below)
knoba - Ac Power Supply

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knoba – Ac Power Supply – Fascia – 2016.dxf

knoba – Ac Power Supply – Meter Scale – 2016.dxf

knoba – Ac Power Supply – Schematic – 2016.fzz

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Arduino battery power supply

Simple power supply for stand-alone arduino.

Would have liked to make a battery enclosure that took 2 stacked batteries.
knoba - arduino battery power supply - 01

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Strip-board pcb.
knoba - arduino battery power supply - 02

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Male usb mini b connector raided from cable.
knoba - arduino battery power supply - 03

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knoba – arduino battery power supply – 2016.dxf (CAD file link below)
knoba - arduino battery power supply

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Arduino – open-source electronics platform

Wiki – Open source

Energizer – Batteries

Digikey – Prototype Boards Perforated

knoba – arduino battery power supply – 2016.dxf

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Lexmark E120N mono laser printer psu fix

Lexmark E120N mono laser printer psu fix

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Lexmark E120N mono laser printer psu fix

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Lemark – Lexmark E120N Mono Laser Printer

Fairchild – KA7552A SMPS Controller

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Bench power supply 240Vac ~ 35Vdc @ 1A

Bench power supply

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Bench power supply

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Bench power supply

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knoba – Front panel – 2012.dxf

Wiki – LM 317

On-Semi – LM317 datasheet(pdf)

Rapid Electronics – Electronic Components

3M – SC-DR Roloc Surface Conditioning Disc

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